An FFGL source that runs Langton's ant, and an effect in which the ants walk your clip. An ant on a grid of black and white cells turns right on white and left on black, flips the cell and steps on. That's the whole rule, and nothing in the plugin draws a picture of an ant's walk. For about ten thousand steps it makes a mess nobody has found any order in, then it starts building a highway and never stops. Turk and Propp's many-coloured ants are a dropdown away, up to eight ants take turns, and the walk runs backwards exactly, so the chaos can un-happen into the empty grid it came from.
This demo runs the plugin's shaders and a port of its walk in your browser, so it needs JavaScript and WebGL2. The plugin itself, its source and its downloads are on its repository.